#1 I don't know where this sense of entitlement is coming from that if you drive you should make enough to support a family. I use Uber/Lyft extensively abroad and none of the drivers I've spoken to use it as their sole income. They all have "day jobs" and are driving to top-up their earnings. Many are students and it's a great way to pay for college.
#2 Some people prefer taxis under the current system, and that's fine. Allowing UberX/Lyft type services means more choice, but don't deny us who would like to use Uber that choice... you can still use your taxi.
#3 Uber/Lyft vetting does exist. There are a pile of taxi drivers with criminal records, not to mention those who have never sat a driving test (due to various amnesties) on our roads. These would not be allowed drive for Uber.
#4 Rural transport has been hammered by changes to the law. A decade ago we had hackneys, now we have none. Those hackey drivers who made feck all in a week in rural villages have not gone for taxi licences as they're too expensive. With Uber etc, people in rural communities would have a new sense of freedom as their neighbours could get out and drive instead of staying in watching the Late Late Show.
There are other benefits too, they're just a few.